 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A B737 flight crew experience a fire warning on an engine that had a deferred engine fire warning system. The flight crew performed an emergency landing.
| Attributes | |
| ACN | 605034 |
| Time | |
| Date | 200401 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ord.airport |
| State Reference | IL |
| Altitude | msl single value : 20000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-500 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 130 flight time total : 8000 flight time type : 3000 |
| ASRS Report | 605034 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 240 flight time total : 8500 flight time type : 5000 |
| ASRS Report | 605036 |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : non compliance with mel non adherence : far non adherence : company policies non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overrode automation flight crew : landed in emergency condition flight crew : declared emergency |
| Consequence | other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Maintenance Human Performance Company Aircraft |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Airplane was dispatched with #2 engine fire loop 'B' inoperative. After normal departure out of ord and on climb out of FL200, we got an engine overheat on #2 engine. When looking at the problem, we noticed 'a/B' switch to be selected to the 'B' position which was the inoperative loop. After confirming with the logbook that 'B' loop was the inoperative loop, the captain switched to loop 'a.' we assumed this would fix the problem. The overheat light remained on, so we performed the engine overheat qrc. Upon pulling the left engine to idle, the light went out after approximately 20 seconds and we performed the reference items. The captain spoke with maintenance and dispatch while I flew the aircraft. We determined we were unable to trust the fire panel and would be declaring an emergency and returning to ord. We began vectors for ord and the ILS to runway 9R. On short final, the engine overheat light came back on, with the engine still at idle. We landed uneventfully and proceeded to the gate.
Original NASA ASRS Text
Title: A B737 FLT CREW EXPERIENCE A FIRE WARNING ON AN ENG THAT HAD A DEFERRED ENG FIRE WARNING SYS. THE FLT CREW PERFORMED AN EMER LNDG.
Narrative: AIRPLANE WAS DISPATCHED WITH #2 ENG FIRE LOOP 'B' INOP. AFTER NORMAL DEP OUT OF ORD AND ON CLBOUT OF FL200, WE GOT AN ENG OVERHEAT ON #2 ENG. WHEN LOOKING AT THE PROB, WE NOTICED 'A/B' SWITCH TO BE SELECTED TO THE 'B' POS WHICH WAS THE INOP LOOP. AFTER CONFIRMING WITH THE LOGBOOK THAT 'B' LOOP WAS THE INOP LOOP, THE CAPT SWITCHED TO LOOP 'A.' WE ASSUMED THIS WOULD FIX THE PROB. THE OVERHEAT LIGHT REMAINED ON, SO WE PERFORMED THE ENG OVERHEAT QRC. UPON PULLING THE L ENG TO IDLE, THE LIGHT WENT OUT AFTER APPROX 20 SECONDS AND WE PERFORMED THE REF ITEMS. THE CAPT SPOKE WITH MAINT AND DISPATCH WHILE I FLEW THE ACFT. WE DETERMINED WE WERE UNABLE TO TRUST THE FIRE PANEL AND WOULD BE DECLARING AN EMER AND RETURNING TO ORD. WE BEGAN VECTORS FOR ORD AND THE ILS TO RWY 9R. ON SHORT FINAL, THE ENG OVERHEAT LIGHT CAME BACK ON, WITH THE ENG STILL AT IDLE. WE LANDED UNEVENTFULLY AND PROCEEDED TO THE GATE.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.